Phytochemical cannabinoids are chemical compounds found in cannabis that bind to receptors in the human body. There are currently over 100 known cannabinoids, though most of them have yet to be independently studied and fully characterized. Two of the better known cannabinoids are tetrahydrocannabinol (THC) and cannabidiol (CBD). THC is well known for the psychotropic/euphoric high it produces due to its activity as a partial agonist of CB1 receptors. CBD is known for its anti-inflammatory, anti-anxiety, and seizure-reducing properties with a reduced psychotropic effect. CBD is also a negative allosteric modulator on CB1 receptors and a weak antagonist of CB2 receptors. CBD is not as psychoactive as THC but does have a significant sedative effect at higher doses. 

To read more about cannabinoids purchase Cannabis Primer: An Introduction to Cannabis for Consumers, Producers, Providers, Policy Makers, and Health Professionals